Odpowiedzi

2010-03-15T21:39:56+01:00
An = 2n² - 3n

a₁ = 2 * 1² - 3 * 1 = -1
a₂ = 2 * 2² - 3 * 2 = 2
a₃ = 2 * 3² - 3 * 3 = 9
3 4 3